linux-kernel - [PATCH] cpufreq: ACPI: Remove unused variables 'acpi_cpufreq

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Date:   Tue,  8 Nov 2022 10:01:03 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Stuart Hayes <stuart.w.hayes@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH] cpufreq: ACPI: Remove unused variables 'acpi_cpufreq_online' and 'ret'

Clang warns:

  drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
          acpi_cpufreq_online = ret;
                                ^~~
  drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable 'ret' to silence this warning
          int ret;
                ^
                  = 0
  1 error generated.

Both ret and acpi_cpufreq_online are now unused so they can be safely
removed, clearing up the warning.

Fixes: 13fdbc8b8da6 ("cpufreq: ACPI: Defer setting boost MSRs")
Link: https://github.com/ClangBuiltLinux/linux/issues/1757
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---
 drivers/cpufreq/acpi-cpufreq.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index c8fdfcf659e6..74ef0e05ff7b 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -953,12 +953,8 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
 	.attr		= acpi_cpufreq_attr,
 };
 
-static enum cpuhp_state acpi_cpufreq_online;
-
 static void __init acpi_cpufreq_boost_init(void)
 {
-	int ret;
-
 	if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
 		pr_debug("Boost capabilities not present in the processor\n");
 		return;
@@ -966,8 +962,6 @@ static void __init acpi_cpufreq_boost_init(void)
 
 	acpi_cpufreq_driver.set_boost = set_boost;
 	acpi_cpufreq_driver.boost_enabled = boost_state(0);
-
-	acpi_cpufreq_online = ret;
 }
 
 static int __init acpi_cpufreq_init(void)

base-commit: 21cdb6c18f85fe538ca8740bc79f11fbe08d0197
-- 
2.38.1